I need to replace the window balance springs. i would like 2 sets along with the window parts that appear to be worn out.
The length is 33".
I tried installing the old part but I could hardly draw it down 1 inch to hook under the snap out catch. needed another 5 6 inches. Are the new ones that difficult.
The identification numbers that I have are as follows: 22 3 KO Caldwell.
The window weight is 18.6 Lbs.
I included a bunch of pictures.
Thank you in advance for your help.
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Tom from SWISCO responded:
January 5, 2023
Thanks for your photos. Based on what I see here, you have either our S351-23 or S390-23, depending on the depth of the bottom shoe. That's the only difference between them. I recommend measuring your shoe and referring to our dimensions to confirm the best match. 
Comparison of the S351 and S390 balance shoes.
As for installation, I personally find these to be pretty simple to install. You can see detailed instructions below. |
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Tom from SWISCO responded:
January 5, 2023
Yes, your old stamp of 22-3 matches our more modern 2230. If your shoe depth is 1", then it will be the S351-23, as stated above. |
